基于ARM7TDMI的SoC中MP3子系统的设计

Design of MP3 Subsystem in SoC Based on ARM7TDMI

以信息系统作为目标直接优化软、硬件的片上系统(SoC)将大大节省软件和芯片资源,大大提高系统的集成度和性价比。文中主要介绍基于ARM7TDMI的面向多媒体的SoC中MP3子系统的优化设计。通过在SoC中增加多媒体加速器(MMA)模块和片上SRAM以及相关的软件优化方案,提出了一种基于低端精简指令集计算机(RISC)处理器核的面向多媒体应用(MP3)的SoC设计方法。该设计方法通过RTL验证,ADS(ARMDeveloperSuit)软件仿真,并通过MPW(Multi-ProjectWafer)的流片已生产出实际芯片。在实际的芯片样机上得到了验证,达到了设计效果。

Taking information system as the target, SoC can save the resources of software and chip greatly, meanwhile the degree of system integration and the performance to price ratio can also be improved significantly by directly optimizing software and hardware (embedded software and chip’s architecture). This paper explains the optimized design of MP3 subsystem in SoC oriented to multimedia basing on ARM7TDMI. Multimedia accelerator module (MMA), on-chip SRAM and the related software optimization scheme are used in our SoC, leading to a SoC design method oriented to multimedia application based on low end RISC processor core. The design method is used for production of real chip after verification of RTL, software simulation based on ADS (ARM Developer Suit), and MPW (Multi project Wafer) project. Moreover, the result obtained the expected effect which is shown by the verification of actual chip prototype demo.